Answer:
answer should be C.) Independent variable since its the one being changed
Explanation:
Answer:
Photosynthesis
Explanation:
Studies about the time period of oxygen accumulation suggests that free oxygen was first produced by prokaryotic and then later by eukaryotic organisms in the ocean. These organisms carried out photosynthesis more efficiently, producing oxygen as a waste product.
The organism mainly responsible for this is known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, oxygen.
Answer:Done doing there job, in the winter they have a break
Explanation:
Answer: Igneous it forms because of magma but magma is under the earths surface so its Igneous
Explanation:
